<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>zuoye</title>
    <link rel="stylesheet" href="CSS/yanghsi.css">
</head>
<body>
<div id="a">
    <div id="z"></div>
    <div id="b">
        <div id="c"></div>
        <div id="f">
            <hr>
        </div>
        <input id="d">
        <div id="g">
        <a><input type="checkbox">全部活动</a>
        <a><input type="checkbox">进行中</a>
        <a><input type="checkbox">已结束</a>
        <div id="e"></div>
        </div>
    </div>
</div>
</body>
</html>